Which statement describes how to solve 3sqrt (x^2-6) = 3sqrt (2x+2)

Square both sides and then solves the resulting quadratic equations

Square both sides and then solve the resulting cubic equations

Cube both sides and then solve the resulting quadratic equations

Cube both sides and then solve the resulting cubic equations

Question

Mathematics

Jenny Weber

6 October, 07:19

Which statement describes how to solve 3sqrt (x^2-6) = 3sqrt (2x+2)

Square both sides and then solves the resulting quadratic equations

Square both sides and then solve the resulting cubic equations

Cube both sides and then solve the resulting quadratic equations

Cube both sides and then solve the resulting cubic equations

+1

Answers (2)

Know the Answer?

Ignacio Arellano · Answer 1

I belive its Square both sides and then solve the resulting cubic equations

Molly Hodge · Answer 2

3√ (x^2-6) = 3√ (2x+2) square both sides

9 (x^2-6) = 9 (2x+2)

x^2-6=2x+2

x^2-2x-8=0 then solve the resulting quadratic equation.

x^2-4x+2x-8=0

x (x-4) + 2 (x-8) = 0

(x+2) (x-8) = 0

x=-2, 8